Polishing-machine.



PATENTED APR. 17, 1906. J4 PBIROE. POLISHING MAGHINE.'

APPLICATION FILED MAY 24, 1905.

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R O T N E V WITNESSES: Kw

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No. 817,798. PATBNTED APR.17, 1906.

J. R. PEIROE.

POLISHING MACHINE.

APPLICATION FILED MAY24,1905- S SHEETSSHEBT 8.

, INVENTOR:

WITNESSES:

12). all iwham it concern: 1'

UNITED s Arns. A'rnivr orrion i I JOHN ROYDENY PEIRGE, or NEW roman. Y.

POLISHIN -MACHINE;

Specification of Letters Patent-.-

Patented April 17,1906.

Application filed May 24.1905. -Serial No. 262,076. I

" Be i'tknown that I, J OHN ROYDEN Parson, a citizen of the United States, residing in the 4 borough of Manhattan, city, county, and

State of New York,'have.invented certain new and useful Improvements in Polishing Machines, of which the following is a speci cation.

This invention aims to rovide a machine for Smoothing and olis 'ng' marble and similar stones and W 'ch automatically accom lishes allthe operations required with theeast expenditure of time and energy. A number of polishing-tools, generally three, are arranged to act-in succession upon the marble, the materials and rateof rotation of these tools being so regulated that the marble passes atool as soon as this tool has done all the work which it can efficiently do. Vllater' is fed continuously and automatically tdgithe facesof the tools to overcome the tendeicy to heating which would be due toa rapid operation of the machine. The tools are arranged close together, except for a space just in advance of the last tool where the marble may be cleaned before-submitting it to the final polishing or mo disk.

Various-other features 0 improvement are referred to in detail hereinafter, and the points of novelty set forth in the claims.

The accompanying drawings illustrate a machine embodying the invention and deone of the tools.

signed for continuously polishing baseboards and similar pieces of marble.

Figure 1 of the drawings is a side eleva- Fig.2 is a plan. Fig. 3 is an end elevation, partly in cross-section. vertical cross-section through the center of Fig.5 is an under side View of the engaging .device at the lower. end of one of the shafts. Fig; 6 is a plan of one .of the tools. Fig. 7 is an elevation thereof. Fig. 8 is a plan of a portion of a bed and a cleaning device.

Referring to the embodiment of the inven' tion illustrated, A, B, and C are tools of suitable material for smoothing and polishing the face of the marble in successive steps. Below these tools the marble D is fed continuously on a thick canvas belt E, which runs around drums F at its ends, which drums are rovided with worm-gears G, driven from a ongitudinal driving-shaft H. The -marble is guided by a pair of guides J, fastened on their supports by means of bolts passing through transverse slots, as shown, whereby tools. p

The tools are operated by' means of verti- Fig; 4 is a Widths. A number of rollers K are arranged immediately belowthebelt and as close together as possible, so as to take the weight of the stone and the pressure of the polishingcal shafts L, M, and N, respectively, 'eaohof 'fected to accommodate "slabs of different which is rovided with a bevel-gear O at its upper en ,andacommon horizontal drivin shaft P is rovided with bevel gears meshing with the gearsO. The shaft P is mounted in bearings R and S, mounted upon the face of the frame of the machine, and the vertical shafts are rovided with upper bearings T and-lower In order that the work shall be perfectly done in one pass of the marble through the machine, the materials of the several wheels being determined, the rate of rotation of the tools should bear a fixed ratio to the rate of feed of the marble. The pressures on the earings U, also mounted I on the face of the frame.

different tools may be varied to compensate 1 for difierences in rapidity of action ofdifierent.

materials used for the several tools. For example, the machine shown is designed to produce a speed of three hundred. revolutions per minute for the polishing-tools with a belt speed of one foot per minute. The fixity of relation between the two'speeds is secured by connecting the drivingshaft P of the tools with the-driving-shaft H of the belt, and in order-to reduce the speed sufficiently this maybe done by means of sprocketchains V and W, connected, respectively, to

sprocket-Wheels on said driving-shafts, and

each connected also to a sprocket-wheel of suitable diameter on an intermediate shaft X. p

The frame of the. machine referably comprises transverse bars Y and which carry at their front portions the longitudinal members Z, which sup ort the guides J and the.

belt and connecte parts. Upon the rear of thetransverse members Y is supported the frame for carrying the tools and-which comprises-a front plate a and side plates b,-with orizonfial stiffening-ribs c at'the back of the front plate. The front plate is suitably curved to make room for the table and the vertical shaft andis provided with projecting portion's d e, carrying the bearings for the several shafts. Certain improvements are also provided applicable to the individual polishing-tools, and these will be understood more clearly from the specific examples shown in Figs. 4 to 7. Taking the shaft L as an ex ample, it will be seen that it is hollow, and water is fed thereinto constantly from any suitable source of supply, such as the hose f, whose nozzle g enters theupper end of the shaft. A spiral spring h is provided hearing at its upper end against the under side of the portion d of the frame and at its lower end against a collar on the shaft, so as to hold the shaft and t e tool down to their work and which is adjustable-to vary the pressure. A universal or flexible joint 7c is rovided near the lower end of the shaft and is of any suitable design to ermit the passage of the water. This fiexib e joint permits the toolto adapt itself to-any large irregularities which may occur onthe face of the marble without intorfering with the removal of the small irregularities, which is the function of the tool.

referably instead of the-usual disk I use a tool A in the form of a ring. This permits the maintenance of a certain quantity of wa'- ter at the center and at the same time pra'c tically eliminates the tendency to rock, which sometimes occurs in disks by reason of the slower wear at the center as compared with the edge.- The present" tool bemg in the form of a ring of considerable diameter, the rate of rotation and of wear on all oints-of the face is substantially equal. W iere the central opening of the is wider than the width of the marble, as il ustrated, (see Fig. 4,) the inner edge Z of thering moves over as great or a slightly greater len th of marble than the outer edge min eac revolution, and this construction should fully eliminate the ordinary tendency.

A special form of connection. is provided between the polishing-tool and the lower end of the shaft, and this connection has been found of great value whether the tool be of disk or ring form or of any other form. This is a toothe d connection, of which the teeth may be of various forms. Preferably a disk or engaging device 7c is connected to the lower end of the universal-joint member isand is provided with three radial teeth n at the lower end to engage between corres onding teeth 0 on the polishing-ring A. here is no ositive connection exce t in the horizonta lane of the teeth. T us rotation is transmitted; but otherwise the tool is entirely free from the shaft. This connection permits an instantaneous removal or re-.

lacement of a olishin .-tool by merely Slightly lifting thd shaft. g 7 i For removing the marble-dust and water before the stone reaches the mop-disk a s ace is left between the two disks B and C.

referably the cleaning is effected by means of one or more water-jets and rubber scrapers, and these may be conveniently supported in the manner indicated in Fig. 8, being adaptwork to be done.

ed for easy removal and replacement, especially for cleaning the scrapers. Through the flange p at the front of the table there are provided airs of slotsq'and 1, and in the rear flange 8 t ere are provided single slots t. Each set of slots q, 1, and t serves to hold a nozzle a and a scraper '12, the latter being, for example, of rubber backed with wood to stiffen it. illustrated, will ordinarily be sufficient. It

will be understood that jets from the nozzles u soften and wash off .to a considerable eX- tent the marble-dust, and the scra ers easily remove what is not washed off by t e nozzles.

The compositions of the several toolswill vary in accordance with the character of the For cheap work the marble may be brought directly from the saw to the polishing-machine, in which case the tool A may, be of fcarborundum of about eighty grit or eightymesh, the second .tool of a mix- Two nozzles and two scrapers, as

ture of-carborundum of the two grades known as 220 and .3 F powder, the third tool C being a mop or felt disk or ring used with ordinary polishingpowders. Little or no water is used with the mop G, the stone being already damp and generally sufficiently damp forpolishin high polish the marble Will be first rubbed to remove the marks of-the saws. In such case the present machine becomes a polishing-machme more than a hiding-machine,

and I have found that for t e first two tools a material known as alundum (which is supposed tobe an electric-furnace product For fine work requiring a i analogous to carborundum, a silicate of aluminium) of one-hundred grit and twohundred grit,respectively, is satisfactory;

The use of the specific compositions described is not claimed in the present application but I am not to be understood as thereby waiving my right to claim the same in a se arate application.

Though I have described a lth great particularity of detail a specific machine embodying the invention, yet it' is not to be. understood therefrom that the invention is limited to the specific embodiment illustrated.

Various modifications thereof in detail and in the arrangement and combination of the parts may be made by those skilled in the art without de arture from the invention;

1. A polishing machine for marble and similar stones, including in combination successive tools for smoothing and polishing the face of the marble in successive steps, vertical shafts for said tools and rovided with beveled inions O, a horizonta driving-shaft P provi ed with beveled pinions Q en a ing 'the inions on said vertical shafts, a

rate of rotation-of the tools and the rate of feed of the marble.

2. A polishing machine for marble and similar stones, including in combination successive tools for smoothing and polishing the face of the marble in successive steps, vertical shafts for said tools, a belt for feeding the 4 marble to said tools, transverse members Y Y carrying at the front the belt and connected parts, and a frame carried upon the.

V cessive tools for'smoothing and polishing the face of the marble in successive steps, vertical shafts for said tools, a belt for feeding the marble to said tools, longitudinal members Z carrying said belt, guides J carried at the sides of said belt-by said members Z, and a frame at the rear provided with bearings for said shafts projecting over said belt.-

4. A polishing machine for marble and similar stones, including in combination successive tools for smoothing and polishing the face of the marble in successive steps, vertical shafts for said tools, a belt for feeding the marble to said tools, a frame at therear provided with bearings for said shafts projecting over said belt, and a spring pressing each of said shafts downward, said shafts being flexibly connected to said tools.

5. A polishing-machine for marble and similar stones, including in combination successive tools for smoothing and polishing the face of the marble'in successive ste s, and

means between two such tools for c the face of the marble. V -6. A polishing-machine for marble and similar stones including in combination successive tools for smoothing and polishing the face of. the marble in successive steps, and cleaning means between two suchtools and comprising a water-nozzle and a scra er. a v 7. A polishing-machine for mar le and similar stones, including in combination a caning polishing-tool, and a shaft having a toothed engagement at its lower end with the tool for rotating the same.

In witness whereof I have hereunto si ned my name in the presence" of two subscri ing witnesses.

JoHN ROYDEN" rEIRoE Witnesses l DOMINGo A. UsnvA,

Tnnono'nn, T. SNELL. 

